import java.util.Scanner;

/**
   Reads a string and counts all vowels contained in that string.
   Vowels are A E I O U a e i o u. 

   Input: the value of s, a string
   Output: the number of all the vowels in s
*/
public class CountVowels
{
   public static void main(String[] args)
   {      
      Scanner in = new Scanner(System.in);
      String s = in.nextLine();
      int count = 0;
      // your work here  
      for(int i = 0; i < s.length(); i++)
      {
         char c = s.charAt(i);
         if(c == 'a' | c == 'e' | c == 'i' | c == 'o' | c == 'u' | c == 'A' | c == 'E' | c == 'I' | c == 'O' | c == 'U')
         {
            count++;
         }
      }
      System.out.println(count);
   }
}